The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.
Patients with long COVID may see some improvement after breathing pure oxygen in a high-air-pressure environment, according to data from a small Israeli trial.Researchers randomly assigned 73 patients with post-COVID symptoms lasting at least three months to receive hyperbaric oxygen therapy or a sham treatment.
That will not be the case if they were infected with a variant that circulated before Omicron, however, according to a study from Qatar. Researchers there found that after taking vaccination status into account, infection with a pre-Omicron version of SARS-CoV-2 appeared to be only 15.1% effective at preventing a symptomatic BA.4/BA.5 reinfection and 28.3% effective at preventing any BA.4/BA.5 reinfection. A previous Omicron infection, however, was 76.1% effective against symptomatic BA.4/BA.
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